diff --git a/src/event/player/PlayerRespawnEvent.php b/src/event/player/PlayerRespawnEvent.php
index 8933aaeb5..5f1f291ac 100644
--- a/src/event/player/PlayerRespawnEvent.php
+++ b/src/event/player/PlayerRespawnEvent.php
@@ -43,6 +43,9 @@ class PlayerRespawnEvent extends PlayerEvent{
 	}
 
 	public function setRespawnPosition(Position $position) : void{
+		if(!$position->isValid()){
+			throw new \InvalidArgumentException("Spawn position must reference a valid and loaded World");
+		}
 		$this->position = $position;
 	}
 }
diff --git a/src/network/mcpe/protocol/EmotePacket.php b/src/network/mcpe/protocol/EmotePacket.php
index 00ece97c1..b32e6662d 100644
--- a/src/network/mcpe/protocol/EmotePacket.php
+++ b/src/network/mcpe/protocol/EmotePacket.php
@@ -30,7 +30,7 @@ use pocketmine\network\mcpe\protocol\serializer\PacketSerializer;
 class EmotePacket extends DataPacket implements ClientboundPacket, ServerboundPacket{
 	public const NETWORK_ID = ProtocolInfo::EMOTE_PACKET;
 
-	private const FLAG_SERVER = 1 << 0;
+	public const FLAG_SERVER = 1 << 0;
 
 	/** @var int */
 	private $entityRuntimeId;
diff --git a/src/stats/SendUsageTask.php b/src/stats/SendUsageTask.php
index 3fb0ff207..b88e517b4 100644
--- a/src/stats/SendUsageTask.php
+++ b/src/stats/SendUsageTask.php
@@ -132,7 +132,7 @@ class SendUsageTask extends AsyncTask{
 				$data["players"] = [
 					"count" => count($players),
 					"limit" => $server->getMaxPlayers(),
-					"currentList" => $players,
+					"currentList" => array_values($players),
 					"historyList" => array_values($playerList)
 				];